Ford Genuine Ford Fluid XL-3 Friction Modifier Additive - 4 oz.
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Engine & Oil Fluid Additives
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About Ford Genuine Ford Fluid XL-3 Friction Modifier Additive - 4 oz.
Overall Feedback:
94% positive
81% liked its compatibility with engines
After adding the Motorcraft additive to the first bottle of 75W140 Gear oil and filling it up, the noise in my rear end was gone after driving it about 20 miles.
After adding the bottle to the diff, within 10 minutes of driving, I felt like the truck was butter.
73% liked the foaming resistance
After draining the diff and adding the friction modifier with fresh oil, I solved the problem.
72% highlighted the oil filter compatibility
After adding 1 bottle to the diff, I felt like the truck was butter within 10 minutes of driving.
89% highlighted the viscosity rating
After adding the friction modifier, I eliminated the shudder and noticed smoother shifting throughout all gears. It's been 3 months and several thousand miles and the shudder has not re-occurred.
